无法将任何数据写入我的SQLite数据库

Question

private void comboBox9_SelectedIndexChanged(object sender, EventArgs e)
    {
        finish_day = Convert.ToInt32(comboBox9.Text);      
    }
    private void comboBox10_SelectedIndexChanged(object sender, EventArgs e)
    {
        finish_month = Convert.ToInt32(comboBox10.Text);
    }
    private void comboBox11_SelectedIndexChanged(object sender, EventArgs e)
    {
        finfish_year = Convert.ToInt32(comboBox11.Text);
    }

    private void comboBox6_SelectedIndexChanged(object sender, EventArgs e)
    {
        begin_year = Convert.ToInt32(comboBox6.Text);
    }

    private void comboBox7_SelectedIndexChanged(object sender, EventArgs e)
    {
        begin_month = Convert.ToInt32(comboBox7.Text);
    }

    private void comboBox8_SelectedIndexChanged(object sender, EventArgs e)
    {
        begin_day = Convert.ToInt32(comboBox8.Text);
    }
    private void serialPort1_DataReceived(object sender, SerialDataReceivedEventArgs e)
    {
        Thread.Sleep(1000);  // important
        from_bs_2 += serialPort1.ReadExisting();
        Thread.Sleep(1000);
        this.Invoke(new EventHandler(showdata));
        Thread.Sleep(1000);

    }
    private void showdata(object sender, EventArgs e)
    {
        int changdu = from_bs_2.Length;
        if (changdu > 50)
        {
            chushihua++;
            string fro;
            string[] parm = new string[6];
            textBox1.Text += from_bs_2;
            fro = from_bs_2;
            parm = fro.Split('\n');
            string path = "C:\\Users\\COM\\Desktop\\data_logging.txt";

            FileStream fs = new FileStream(path, FileMode.Append, FileAccess.Write);
            StreamWriter sw = new StreamWriter(fs);

            for (int a = 0; a < 4; a++)
            {
                string[] zhongjian = new string[23];
                zhongjian = parm[a].Split(';');
                //  textBox1.Text += zhongjian;
                for (int keai = 0; keai < 23; keai++)
                {
                    current[a, keai] = Convert.ToDouble(zhongjian[keai]);
                    sw.Write(current[a, keai]); sw.Write(';');


                }
                sw.WriteLine('/');
            }
            string[] zhongjian_2 = new string[23];
            zhongjian_2 = parm[5].Split(';');
            for (int m = 0; m < 23; m++) // 
            {
                volatge[m] = Convert.ToDouble(zhongjian_2[m]);
                sw.Write(volatge[m]); sw.Write(';');
            }
            sw.WriteLine('/');

            DateTime dt = DateTime.Now;  //strong text

            int y = dt.Year;      //
            int yue = dt.Month;     //
            int d = dt.Day;       //
            int h = dt.Hour;      //
            int n = dt.Minute;    //  
            textBox1.Text += y;
            textBox1.Text += "-";
            textBox1.Text += yue;
            textBox1.Text += "-";
            textBox1.Text += d;
            textBox1.Text += "-";
            textBox1.Text += h;
            textBox1.Text += ":";
            textBox1.Text += n;

            textBox1.Text += "-";
            textBox1.Text += "data logging times";
            textBox1.Text += chushihua;


            sw.Write(y); sw.Write("-"); sw.Write(yue); sw.Write("-"); sw.Write(d);
            sw.Write("-"); sw.Write(h); sw.Write(":"); sw.Write(n); sw.WriteLine('/');
            sw.Close();
            fs.Close();
            //////////////////time/////////////////////////////



            string info = "INSERT INTO Logging_Data_2 (Time,Number,Power1,Power2,Power3,Power4,Power5,Power6,Power7,Power8,Power9,Power10,Power11,Power,Power12,Power13,Power14,Power15,Power16,Power17,Power18,Power19,Power20,Power21,Power22,Power23) values ('a',1,current[0, 0],current[0, 1],current[0, 2],current[0, 3],current[0, 4],current[0, 5],current[0, 6],current[0, 7],current[0, 8],current[0, 9],current[0, 10],current[0, 11],current[0, 12],current[0, 13],current[0, 14],current[0, 15],current[0, 16],current[0, 17],current[0, 18],current[0, 19],current[0, 20],current[0, 21],current[0, 22])";
            using (System.Data.SQLite.SQLiteConnection connection = new System.Data.SQLite.SQLiteConnection("data source=logging_data.db"))
            {
              //  connection.Open();
              //  using (DbTransaction transaction = connection.BeginTransaction())
            //    {
                    using (System.Data.SQLite.SQLiteCommand command = new System.Data.SQLite.SQLiteCommand(connection))
                    {
                       connection.Open();
                       command.CommandText = info;
                     //*emphasized text*command.ExecuteNonQuery();
                                      }
                 //    transaction.Commit();
              //  }
            }


            from_bs_2 = "";
            if (textBox1.Text.Length > 1500)
            {
                textBox1.Text = "";
            }
        }


        }

我要编写一个超级简单的文件，通过串行端口从arduino获取数据，如果我获取数据，则首先将它们记录在txt文件中，然后将它们发送到数据库中以备将来计算。因此，我安装了SQLite，并在其中编写了caode，但是当我对其进行测试时，我可以将数据记录到txt fime，但是数据库中什么也没有。

我建立了一个名为logging_data的数据库，该表为Logging_data_2，当我发现无法将任何数据记录到数据库中时，我只是将时间设置为'a'，将数字设置为1，但仍然无法正常工作。寻求帮助，谢谢！